公开(公告)号：US08718726B2

公开(公告)日：2014-05-06

申请号：US13629431

申请日：2012-09-27

Applicant: Apple Inc.

Inventor： Umesh K. Shukla ,  Sachin J. Sane

IPC: H04W88/02

CPC classification number: H04W24/02 ,  H04L43/10 ,  H04L47/765 ,  H04L47/805 ,  H04L47/824 ,  H04W4/00 ,  H04W4/02 ,  H04W28/0215 ,  H04W28/0242 ,  H04W76/25 ,  H04W76/34 ,  H04W88/06

Abstract: Methods and apparatus for reducing voice call drop rate. Existing devices do not account for the added burden of background services on voice calls. Specifically, multi-RAB scenarios (e.g., a voice call and background services) can experience significant reduction in call quality. Accordingly, in one exemplary embodiment, background services that are not time-critical and/or application-critical can be suspended while a voice call is in progress. By suspending background traffic during a call, the device can avoid unnecessary multi-RAB voice call operation, which significantly improves overall network operation and user experience.

Abstract translation: 减少语音呼叫丢弃率的方法和设备。 现有设备不会影响后台服务对语音通话的负担。 具体地，多RAB方案（例如，语音呼叫和后台服务）可以显着降低呼叫质量。 因此，在一个示例性实施例中，在进行语音呼叫时可以暂停不是时间关键和/或应用关键的后台服务。 通过在呼叫期间挂起后台流量，设备可以避免不必要的多RAB语音呼叫操作，大大提高了整体网络运行和用户体验。

公开(公告)号：US12228655B1

公开(公告)日：2025-02-18

申请号：US17668828

申请日：2022-02-10

Applicant: Apple Inc.

Inventor： Glenn D. MacGougan ,  Aditya N. Srivastava ,  Harsha Shirahatti ,  Madhusudan Chaudhary ,  Ozgur Ekici ,  Sachin J. Sane ,  William J. Bencze

IPC: G01S19/23 ,  G01S19/20 ,  G01S19/24 ,  H01Q1/24

Abstract: This disclosure is directed to shared antenna tuning. An electronic device may receive a global navigation satellite system (GNSS) tune request to tune a shared antenna to a GNSS signal frequency. The electronic device may then tune the antenna to the GNSS signal frequency and enable a GNSS receiver. The electronic device may also receive a cellular tune request to tune the antenna to a cellular frequency. The electronic device may tune the antenna to a cellular frequency and may deactivate the GNSS receiver or blank the GNSS receiver. In some embodiments, the electronic device may also communicate with a Low Earth Orbit (LEO) satellite. During LEO satellite communication, the electronic device may transmit a signal to blank a GNSS L1 receiver to avoid signal interference with the LEO satellite communication, and activate a GNSS L5 receiver to receive GNSS signals.

公开(公告)号：US20230097709A1

公开(公告)日：2023-03-30

申请号：US17951201

申请日：2022-09-23

Applicant: Apple Inc.

Inventor： Sagar B. Shah ,  Sachin J. Sane ,  Madhusudan Chaudhary

IPC: H04B7/06

Abstract: In an example method, a user equipment (UE) of a wireless network determines data for transmission between the UE and a base station (BS) of the wireless network; determines a context of the transmission of the data between the UE and the BS; selects, based on the context, one or more antenna elements of an antenna array of the UE; and forms one or more wireless beams using the one or more selected antenna elements. Further, the UE (i) transmits at least a first portion of the data to the BS using the one or more wireless beams, and/or (ii) receives at least a second portion of the data from the BS using the one or more wireless beams.

公开(公告)号：US11540185B2

公开(公告)日：2022-12-27

申请号：US17178121

申请日：2021-02-17

Applicant: Apple Inc.

Inventor： Sagar B. Shah ,  Alosious Pradeep Prabhakar ,  Kanuganti Rajeswar Reddy ,  Lakshmi N. Kavuri ,  Li Su ,  Manish G. Vemulapalli ,  Muthukumaran Dhanapal ,  Ozgur Ekici ,  Rangakrishna Nallandigal ,  Sachin J. Sane ,  Shivani Suresh Babu ,  Sree Ram Kodali ,  Srinivasan Nimmala ,  Vijay Venkataraman ,  Yifan Zhu

IPC: H04W36/00 ,  H04W48/20 ,  H04W8/24 ,  H04L27/26 ,  H04B17/318 ,  H04B17/336 ,  H04W76/27 ,  H04W24/10

Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to prioritize cells that support EN-DC over similar cells not supporting EN-DC. The UE may be configured to perform one or more measurement scans associated with cell selection and/or cell re-selection and may determine whether at least two LTE cells meet a selection criteria based on RSRP and/or SNR measurements. The UE may be configured to, in response to determining that at least two LTE cells meet the selection criteria, prioritize a first LTE cell of the at least two LTE cells over a second LTE cell of the at least two LTE cells based, at least in part, on support EN-DC. The first LTE cell may indicate support of EN-DC, e.g., via a ULI IE included in a SIB2 broadcast by the first LTE cell. The UE may be configured to select the first LTE cell for camping.

公开(公告)号：US20220295343A1

公开(公告)日：2022-09-15

申请号：US17691092

申请日：2022-03-09

Applicant: Apple Inc.

Inventor： Ioannis Pefkianakis ,  Muthukumaran Dhanapal ,  Rajesh Ambati ,  Lakshmi N. Kavuri ,  Thanigaivelu Elangovan ,  Ajay Singh ,  Dinesh Kumar Arora ,  Raghuveer Mallikarjunan ,  Gaurav Pathak ,  Palash Chaturvedi ,  Narayanan Subramanian ,  Sergey Sitnikov ,  Abhishek Walia ,  Ajoy K. Singh ,  Oleg M. Moskalenko ,  Sachin J. Sane ,  Avinash Viswanathan ,  Bhumika N. Makwana

IPC: H04W28/02 ,  H04W24/08 ,  H04W36/00 ,  H04W36/22

Abstract: Systems and methods performed by user equipment (UE) for communicating over a wireless communication network include receiving data representing one or more communication quality metrics for communication on a New Radio (NR) communication link of the wireless communication network. The method includes determining, based on the data representing the one or more communication quality metrics, a data throughput for the NR communication link of the wireless communication network. The method includes estimating a theoretical throughput for using a Long Term Evolution (LTE) communications link of the wireless network. The method includes comparing the data throughput using the NR communication link to the theoretical throughput for using the LTE communication link. The method includes causing a switch, based on the comparison, from the NR communication link to the LTE communication link.

公开(公告)号：US20190306793A1

公开(公告)日：2019-10-03

申请号：US16442730

申请日：2019-06-17

Applicant: Apple Inc.

Inventor： Tianyan Pu ,  Sai Sravan Bharadwaj Karri ,  Wei Zhang ,  Swaminathan Balakrishnan ,  Xiantao Sun ,  Beibei Wang ,  Manish G. Vemulapalli ,  Jia Tang ,  Sami M. Almalfouh ,  Zhu Ji ,  Sachin J. Sane

IPC: H04W52/02 ,  H04B7/0456

Abstract: This disclosure relates to techniques for opportunistically depowering receiver chains of a wireless device. Based on control information, a device may determine whether the current number of active receiver chains can be reduced while maintaining a target achievable code rate for a period of data reception associated with the control information. Additionally, the device may generate and use a lookup table to determine whether to depower receiver chains, and which receiver chains to depower.

公开(公告)号：US10129796B2

公开(公告)日：2018-11-13

申请号：US15691349

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Ozgur Ekici ,  Jianxiong Shi ,  Li Su ,  Sachin J. Sane ,  Sai Sravan Bharadwaj Karri

IPC: H04W88/08 ,  H04W36/00 ,  H04W52/40 ,  H04W52/02 ,  H04W52/24 ,  H04W52/36 ,  H04B17/318 ,  H04W88/06

Abstract: According to techniques described herein, a UE (which may be link budget limited) may be connected to a network using a first RAT. The UE may be configured to determine a first resource requirement for communication on the network using the first RAT and a second resource requirement for communication on the network using a second RAT. The UE may be further configured to trigger a re-selection to the second RAT in response to the UE determining that the second RAT is preferred over the first RAT based, at least in part, on a comparison of the first and second resource requirements.

公开(公告)号：US10057830B2

公开(公告)日：2018-08-21

申请号：US15633033

申请日：2017-06-26

Applicant: Apple Inc.

Inventor： Karthik Chockalingam ,  Sai Sravan Bharadwaj Karri ,  Swaminathan Balakrishnan ,  Sachin J. Sane

IPC: H04W36/30 ,  H04W36/00

CPC classification number: H04W36/30 ,  H04W36/0055 ,  H04W36/0058 ,  H04W36/0088

Abstract: Method and apparatus to trigger a handover of a mobile device from a serving cell to a neighbor cell based on signal quality are disclosed. The mobile device measures signal strength and signal quality for the serving cell. When the signal strength exceeds a network-defined threshold and the signal quality falls below a mobile device defined threshold, the mobile device measures at least one neighbor cell. When a neighbor cell exceeds the network-defined threshold for signal strength and also meets the mobile device defined signal quality threshold, the mobile device sends a measurement report to the serving cell to trigger the handover. The measurement report includes modified values that indicate the serving cell does not meet network-defined threshold values and that the neighbor cell outperforms the serving cell.

公开(公告)号：US20180092007A1

公开(公告)日：2018-03-29

申请号：US15691349

申请日：2017-08-30

Applicant: Apple Inc.

Inventor： Ozgur Ekici ,  Jianxiong Shi ,  Li Su ,  Sachin J. Sane ,  Sai Sravan Bharadwaj Karri

IPC: H04W36/00 ,  H04W52/40 ,  H04W52/02

CPC classification number: H04W36/0066 ,  H04B17/318 ,  H04W36/0072 ,  H04W36/0094 ,  H04W48/18 ,  H04W52/0212 ,  H04W52/245 ,  H04W52/367 ,  H04W52/40 ,  H04W88/06

Abstract: According to techniques described herein, a UE (which may be link budget limited) may be connected to a network using a first RAT. The UE may be configured to determine a first resource requirement for communication on the network using the first RAT and a second resource requirement for communication on the network using a second RAT. The UE may be further configured to trigger a re-selection to the second RAT in response to the UE determining that the second RAT is preferred over the first RAT based, at least in part, on a comparison of the first and second resource requirements.

公开(公告)号：US20170019846A1

公开(公告)日：2017-01-19

申请号：US15202257

申请日：2016-07-05

Applicant: Apple Inc.

Inventor： Li Su ,  Ozgur Ekici ,  Sachin J. Sane ,  Madhusudan Chaudhary ,  Jianxiong Shi

IPC: H04W48/18 ,  H04L12/26 ,  H04B1/3827 ,  H04J11/00 ,  H04L29/06 ,  H04B17/318 ,  H04L12/741

CPC classification number: H04W48/18 ,  H04B1/385 ,  H04B17/318 ,  H04J11/0069 ,  H04L63/0853 ,  H04W84/042

Abstract: Techniques for a link budget limited UE to improve communications performance with cellular networks are disclosed. The UE may be associated with subscriptions to multiple carriers and may connect to a cell of a first carrier. The UE may detect that received signal strength from the cell is below a threshold and search for a new cell that may be of a different carrier. The UE may store a PLMN eSIM priority look up table and the search may be based on the look up table. Additionally, the UE may track received signal strength and geographic location in a first data structure that the UE may send to a server. The UE may receive a second data structure from the server that includes received signal strength at geographic locations compiled from a plurality of UEs, including the UE. The UE may also use the second data structure in searches for a new cell.

Abstract translation: 公开了一种链路预算有限的UE提高蜂窝网络通信性能的技术。 UE可以与对多个载波的订阅相关联，并且可以连接到第一载波的小区。 UE可以检测来自小区的接收信号强度低于阈值并搜索可能是不同载波的新小区。 UE可以存储PLMN eSIM优先级查找表，并且搜索可以基于查找表。 此外，UE可以跟踪UE可以向服务器发送的第一数据结构中的接收信号强度和地理位置。 UE可以从服务器接收包括从包括UE的多个UE编译的地理位置处的接收信号强度的第二数据结构。 UE还可以在搜索新小区时使用第二数据结构。